I was joking about the free samples.

I have been using Amsoil in most of my motors. I use the "Dominator" Racing Oil in my boys KTM race bikes, the "Sabre" Synthetic outboard oil in the old '84 Johnson and have used their syncro oil in the TSX 6 speed tranny. Always with great results.

Here's a related story about the 1984 25HP Johnson outboard:

A couple years ago it started running a little rough, wouldnt' troll down real slow (for walleye fishing) without getting a misfire in one of the two cylinders, would stall out, smoked like a Bast#@d and would leave a noticeable oily/gasy slick in its wake while trolling. Ran fine wide open.
I changed the plugs several times but one plug would continue to fowl and the engine would misfire.
So I proceeded to drop it off at a local, very reputable marine mechanic and he started asking questions about the symptoms. He then asked what kind of two stroke oil do I use and at what ratio do I mix it? Told him I only use the oil recommended and branded by the motor manufacturer (OMC) and mixed it at 50:1 as per their manual. He then said "Go get some good quality, fully synthetic outboard oil, like Amsoil and mix it half the amount of oil at 100:1
If that doesn't cure it then he said you'll have to bring it back and I'll have to tear it apart.
Guess what........I've never seen him again and the boat has never run better. No more misfire, no stalling, no more smoke, no more oil slick. MUCH better for the environment too.

I am a AMSOIL believer.

Steve